Oil burning apparatus



24, 193 6. o. J. APPEL 2,034,73?

OI L BURN ING APPARATUS Filed June 5, 1931 4 Sheets-Sheet 1 Fig.1.. o/a cr/o/l o Y 74 74 74 By ara! JA ATTORNEY 24, 1936. Q APPEL I 2,034,737

OIL BURNING APPARATUS Filed Jun 5, 1931 4 Shets-Sheet 2 INVENTOR 0 0012.]: A II 0e! A'ITORNEY March 24, 1936. o. J. APPEL 2,03%

OIL BURNING APPARATUS Filed June 5, 1931 4 Sheets-Sheet 3 MM? a 4 Oaaar J lip 0e! BY ATTORNEY arch '24, 19356. O J APPEL 2,034,73?

OIL BURNING APPARATUS Filed June 5, 1931 4 4 Shets-Sheet 4 Flm INVENTOR v Oscar J A p ael BY 6 meawf ATTORNEY Patented Mar.- 24, 1936 UNETE STTES 18 Claims.

This invention relates to sprayers or distributors; especially to motor-driven sprayers or distributors for converting oil into minute separated particles intermixed with air to be consumed as fuel in the furnaces of heating plants and for other uses.

The invention set forth herein is an improved type of vertical rotary oil burner having an oil spraying device adapted to be placed in the middle of a hearth to deliver commingled air and oil thereto in such manner that combustion takes place at a flame wall around the circumference of the hearth, and is prevented from beginning near the center where the oil sprayer is disposed.

An object of the invention is to provide an oil sprayer constructed to operate without splashing, stirring or otherwise agitating the liquid fuel; and to receive and discharge the oil in a steady stream that passes through the sprayer at a uniform rate; which gives oil in suflicient quantity but is controlled to prevent more than is required from entering the sprayer; thus guarding against an overflow and obviating the need for collecting and returning any of the oil to the feed pipe and the risk of waste that would otherwise be caused by loss of excess oil dripping from any of the parts f the sprayer. Thus I secure not only a high degree of eiliciency but also a greater degree of cleanliness in practice.

A further object of the invention is to provide an oil sprayer comprising a containing member in which a restricted supply of oil is carried and which operates by centrifugal force to discharge the oil through suitable ejector nozzles; the oil issuing therefrom being then acted upon to divide and diffuse it and mix it with the necessary volume of air to produce through combustion.

Another object of the invention is to provide an oil sprayer comprising ejectors or discharge nozzles and shaped to admit a restricted quantity of air which, however, instead of being thrown outwardly from the ends of the nozzles as is the oil, is largely discharged through the trailing sides of the nozzles, thereby causing a partial vacuum in the nozzles, and. causing the circulation of a certain amount of air through the sprayer, thus eifectually cooling the same.

Yet another object of the invention is to provide an oil sprayer or distributor comprising an impeller to act upon the oil, and a motor to revolve the impeller; in combination with a supporting part between the impeller and the motor with a bearing to receive and lubricate the main shaft; said member being arranged to shield the motor from the process of combustion going on around the impeller and the bearing being of such a character as to insure easy rotation of the shaft therein and to prevent overheating of the parts within the bearing engaging such shaft.

A still further object of the invention is to provide an oil spraying device comprising an oil container and an impeller for the division of the oil and the commingling thereof; arranged so that the container can be shifted to control its position and the effect thereof in operation.

An additional object of the invention is to provide an oil sprayer and distributor comprising a rotating member to receive the oil and equipped with nozzles to discharge it therefrom, together with a stationary part disposed adjacent said member and having a duct or passage therein through one end of which oil flows into said member and having its other end united to a suitable feed pipe.

With these and other objects and advantages in view, which will appear as the description proceeds, the invention consists in the novel features explained herein more particularly pointed out and defined in the appended claims. But this disclosure is illustrative only and various changes may be made in the shape, size or operation ofthe various elements, without departing from the principle of the invention or exceeding its scope as indicated by the meanings of the terms in which the claims are expressed.

On the drawings:

Figure 1 is a side elevation of an oil sprayer or distributor according to my invention.

Figure 2 is a central longitudinal section through the operating parts thereof. Figure 3 is a transverse section on the line 3-3 of Figure 2, looking in the direction of the arrows.

Figure 4 shows the construction of the end of the main drive shaft.

Figure 5 is a section of the line 55 on Figure 2 looking in the directions of the arrows. Figure 6 is a top plan of the oil sprayer partly broken away to show an adjustable air-gate.

Figure 7 is a side view of a detail showing how the air-gate is supported and actuated.

Figure 8 is a detailed view showing one of the oil ejector or delivery nozzles.

Figure 9 is a longitudinal section through one of the mounting and lubricating bushings for the main drive shaft.

Figure 10 is a transverse section thereof on the line III-J0 of Figure 9.

Figure 11 is a top plan of the impeller for the oil distributor.

Figure 12 is a bottom plan thereof.

low the'casing I.

blades II depending therefrom adjacent each of Figure 13 is a vertical section on the line I3--I3 of Figure 12, looking in the direction of the arrows.

Figure 14 is a transverse section on the line I4I4 of Figure 13, looking from below towards the topofthelimpellerw \-l a V Figure 15 is a transverse section on the line I5I5 of Figure 13, looking in the opposite direction.

Figure 16 is a top plan of the adjustable airgate.

Figure 17 is a side view thereof.

The same numerals identify the same parts throughout.

The oil sprayer or distributor comprises 2. cylindrical casing I, which need not be of very great height, mounted upon adjustable legs 2. At its lower open end the casing I is surrounded by an outward projecting flange or rim 3 to which the legs are attached. In the top of the casing I is an enlarged aperture 4, the edge of which is bevelled or flares upward as indicated in Figure 2. Just above the top of the casing I is the rotary impeller 5; which is secured to the spray cup 6; the upper end of which is within the casing I and the opposite end below the flange 3. This cup is open at both top and bottom; and the bottom has the rim thereof turned inward and then upward to form an inside annular trough or reservoir I to retain any oil admitted to the interior of the spray cup and prevent it from running I the aperture 4 and terminate in a transverse plane above the casing I. The lower ends of these nozzles communicate with the interior of the spray cup below the terminal edge of the rim 8.

Their function is to discharge oil outward, as will be described later and the distance between the upper 'end of these nozzles and the top of the impeller 5 can be adjusted within prescribed limits. The 'spray'cup 6, nozzles 9, and impeller 5 are revolved as a unit; the power being furnished by a motor III, which may be electrical or of any other convenient type, supported upon legs 2 be- The impeller 5 has vanes or the spray pipes 9, with the lower edges of these blades in proximity to the top of the casing I but preferably extending outward in a wedging position beyond the upper end of the pipe 9, such blades inclining slightly toward the direction of peripheral movement of the impeller. Just below the flange 3 is an air-gate I2 for the open lower end of the casing I, with an enlarged central aperture to enable the air-gate to surround the spray cup loosely. The cup 6 can revolve freely in this aperture and the air-gate I2 is mounted to enable it to move up and down to control the amount of air which flows into the casing I around the spray cup 6 and through the aperture 4 and out between the vanes I I.

With this construction as thus far described, the revolution of the cup 6 and the impeller 5 will cause oil admitted to the inside of the cup in the proper quantity to cling by centrifugal force to the slightly upwardly flaring inside surface of the cup and to flow gradually upward to the open and overflow along the inner side thereof.

lower ends of the nozzles 9. At this level the oil will be retarded by the inward bent rim 8; and taking the lines of least resistance, will then flow out through the ejector nozzles 9 instead of passing upward and out of the cup over the rim 8. The vanes or blades II will all be disposed so as to lead the nozzles 9 when the impeller revolves as indicated in Figure I2; or, if desired, there may be two vanes for each nozzle, the other in trailing position. Hence, as the impeller 5 rotates the blades I I throw off the air adjacent the upper ends of the nozzles 9, and the rotation of the impeller also creates a partial vacuum along the trailing side of the nozzles, tending to pull up the air through the slots 66 of the nozzles so as to tend to avoid a combustible mixture in the tubes. This also induces a circulation through the cup and tends to keep the oil in cooler condition, thus assisting in preventing ignition near the impeller. The oil issues in the form of a thin film from the nozzles 9 and is at once broken up into fine particles by the action of the air adjacent the blades I I. Thus the air in the neighborhood of the distributor is charged with oil in a state of fine division, so that combustion can be very advantageously accomplished. In practice a hearth will surround the casing I and be wholly or in part supported by the flange 3; and above this hearth the finely divided oil particles will be burnt. The hearth may of course be located in operative position with respect to a boiler or any other installation for which fuel to generate heat must be utilized.

With two vanes, one at each side of the nozzles 9, any hot air that may enter the impeller from the hearth will be deflected and instead of striking the nozzles, will be caused to flow out of the impeller without first mingling with the oil issuing from nozzle 9.

Below the casing I is a hollow head I3 which will be of suitable metal and may be formed by casting. Adjacent to the lower end of this head which is open, are fixed projections or lugs I4 which rest upon projections or collars of suitable shape afiixed tothe legs 2; and the projections I 4 and I5 may be perforated to enable them to be held together by suitable fastening means in the form of bolts and nuts I5. The projections I4 on the head I3 may also be provided with additional perforations for bolts II to engage threaded openings in projections on the framework or casing of the motor Ill, as indicated in Figure 2; so that the motor can be attached to the head I3 and suspended therefrom. At I B is the shaft of the motor extending up into the head I3 and coupled to the operating shaft I9 of the impeller 5 and the spray cup 6 by a coupling 20. The shaft I9 passes through a suitable bearing 2i in the top of the head I3, and this bearing has an enlargement 22 at one side "which can be drilled out to provide an oil inlet duct 23. The bearing 2| extends to the interior of the cup 6 and at the upper end of the duct '23 is an oil inlet nozzle 24, the discharge end of which will be in proximity to the curved inside surface of the cup 6. To the opposite end of the duct 23 an oil feed pipe will be attached. The oil which is admitted by way of the nozzle 24 runs down into the trough I; and the inflow of oil will of course be regulated so that the reservoir I will not fill up The bottom of the cup 6 is in proximity to the top of the head I3 but separated therefrom to form a restricted space for air to enter and flow through the cup from the bottom to the top thereof for cooling purposes.

The major portion of the air flowing through the distributor will enter the casing I by way of the gate l2, and this gate maybe raised and lowered to regulate the air passing it. The central opening through the gate for the cup 6 is shown at 25 and to the interior of the casing I is afilxed one or more inclined rails 26 which extend downward below the gate I2. The periphery of the gate I2 will have notches 2'! to receive the rails 26 and to the lower face of the gate adjacent each of these recesses is secured a metallic strip 28 having one end curled up to form a bearing to engage the tops of the rails 26 whereby the gate I2 will be supported thereon in any of its adjusted positions. To one of the legs 2 is secured a collar 29 with a projection having a threaded opening for a headed regulating bolt 32. This bolt extends upward in a diagonal direction and terminates in a reduced end 30 behind which is a circumferential groove 3i. Into this groove the edge of the curled end of the strip 28 projects. Hence by turning the bolt the gate I2 can be raised or lowered. The bolt 32 lies in a vertical plane that is approximately tangential to the circular gate I2; and therefore as the gate I2 is raised or lowered it is also rotated and the bearings 28 slide along the rails 26; the gate always remaining in the desired position. Air which passes the gate I2 and flows through the casing I around and through the cup 6 is consequently drawn through the opening 4 and expelled out past the upper ends of the nozzles 9 by the vanes II of the impeller 5. Enough air for complete oxidation of the finely divided oil, as the latter is burnt after issuing from the nozzles 8 is thereby insured.

To regulate the operating effect of the impeller 5 the device is so constructed that the space between the impeller and the cup 6 can be altered to a predetermined extent, and the distance between the cup 6 and the top of the casing I varied. For this purpose I provide a cross-bar 33 the ends of which may be bent up and curled over into the form of a tube to provide two of the nozzles 9 at diametrically opposite points. See Figures 2 and 8. When more than two nozzles are desired a second cross-bar at right angles to the first may be included as in- .dicated at 34. The two cross-bars 33 and 34 may be made in one piece as by stamping them out together and the second crossbar 34 may be bent downward to form shoulders 35 adjacent to the first cross-bar 33 as indicated in Figure 13. At its outer ends the crossbar 34 may be turned up and secured in any suitable manner to the edge of the inturned rim 8. Both crossbars are rigidly connected, as by welding or brazing, to the cup 6. Two additional spray pipes 9 may then be installed, one at each end of the bar 34, making them fast in any feasible manner to the rim 8 and perforating the rim accordingly. The center of; the bar 33 has an opening 36 with key projections 37 at diametrically opposite points. This opening 33 will be large enough to receive the upper end of the shaft I9 which has a shoulder 38 beyond which there is a reduced tapering extension 39. From the shoulder 38 extend downward along opposite sides of the shaft I9 grooves or keyways 40. When the shaft I9 enters the opening 36 these keyways can be engaged by the key projections 31.

To support the impeller 5, I provide a spidershaped frame which consists of a central plate 4| having reversely bent portions forming legs between the impeller a-nd the cup- 6. One pair of legs includes sections 42 extending from the top plate M down to the bar 33 (Figure 2) where they are joined to horizontally extending sections 43, which are united to return sections 44, that run up to the impeller 5 and are there bent horizontally outward to form feet 45. The feet 45 are secured to the impeller 5 in any suitable way. When the bar 33 is affixed to the connecting sections 33, the impeller 5 will be separated from the top of the cup 6 by a space depending upon the height of the sections 42 and MI.

This spider-shaped frame lI also comprises a pair of connecting legs at right angles to the first pair, bent downward at 46 to a point below the levels of the connecting portions 43 of the section 42. The sections 46 are there bent outward as shown at 47 and then upward as shown at 38; the extremities of the sections 48 being turned out to provide feet 49, secured like the feet 35 rigidly to the impeller 5. When the parts are adjusted as shown in Fig. 13, wherein the parts 66 form the sole supports, the distance between the cup and impeller is greater than when the parts 84 also form the supports, as well as the parts 13, as is shown in Fig. 2. When the nozzles are in their high position relatively to the impeller, the oil is thrown out further, and enables the device to act more efiiciently with a hearth of larger diameter. In the position of Fig. 2 screws 53 secure the crossbar 33 to the sections 23. To lower the cup somewhat the screws 58 are removed and the cup is turned till the legs comprising sections 46 and 48 lie in the vertical plane of the crossbar 33, as shown in Figure 13. In the former position shown in Figure 2, the connecting sections 41 rest upon the bar 34 beside the vertical shoulders 35 and can be aflixed by suitable fastening devices inserted into holes 5I in the bars 33 and 52 in the sections ll. Similar openings in the bar 33 and sections 13 receive the screws 50. In the position shown in Figure 13 the sections 83 are above the bar 34 and the impeller is attached to the bar 33 only.

The opening 36 has a lateral extension 53. This opening is to allow the cup and impeller to be moved sideways when they are lifted high enough to make the projections 38 clear the keyways 66. The reduced prolongation 39 then enters the extension 53 so that when it is desired to remove the impeller 5 andthe cup 8 from the casing I the trough I will not catch against the nozzle 24. When the impeller 5 and the cup 6 are mounted on the shaft I9 the same sideways motion is first given to these parts; the prolongation 39 being first passed through the extension 53 till the trough I clears the nozzle 24 and then the impeller and cup are moved sideways to bring the key projections 31 into line with the keyways 43. Prolo-ngation 39 is conical and its upper end lies within a hole lla in the plate lI. Impeller 5 and cup 6 thus hang on this prolongation, and the impeller is always at a fixed level above the casing, the cup may be lower or higher in the casing,

The projections 3 upon fitting within the lower end of the keyways All steady the impeller and the cup as they revolve. The prolongation 39 is always free of the plate 4! when the bar 33 is adjacent the level of the shoulder 38 on the shaft I9.

With the construction shown, the shaft I9 does not extend through the impeller 5, also the parts mounting the impeller and the cup on the shaft are light and easily cooled. reducing the heat that can be conducted from the furnace to the cup or shaft l9.

To support the shaft IS in the bearing 2| of the head l3, this shaft carries within the bearing 2! a collar 55 secured thereon by a cotter pin 54a, or other suitable means. Below this flange or collar are a pair of disks 55 encircling the shaft in the bearing and engaging between them a set of anti-friction elements 56 in a suitable retainer. The opposite ends of the bearing 2! receive bushings '5 (Figs. 9 and with the central bores 58 to give passage to the shaft I9 and outside circumferential grooves 55 near one end to communicate with the bores 53 through radial ports 58. The bushings 5? also have longitudinal ducts 55 which perforate the opposite ends and also communicate with the grooves 59. These bushings are disposed in the bearing 2| to occupy the positions shown in Figure 2; the unperforated ends of these bushings being presented to the opposite extremities of the bearing and the other ends perforated by the ducts 6| abutting the lower disk 55 and the collar 54 pressing upon the other disk. At 52 (Figure 3) is a nipple in the side of the bearing through which the lubricant 63 can be forced into the bearing. This nipple will be at the level of the groove 59 in the lower bushing and through it grease can be forced to fill the groove 59 and supplied to the shaft l9 through the ports 65. Lubricant is also forced through the ducts 6i and past the disks 55 into the grooves 59, ports 60 and ducts 5i of the upper bushing as well as be tween the disks 55 and among the anti-friction elements 55. Thus the complete lubrication of the shaft I9 is achieved.

It will be observed that this bearing is very compact and massive and by the interposition of the head I3 with the bearing 2! between the motor and the casing l, the motor is well protected from the action of heat liberated by combustion above the hearth surrounding the casing I.

In the lower end of the bearing 2! is screwed a gland 64 which is recessed on its inner face for suitable packing 65 and the lower bushing rests thereon. The collar 55 thus presses the disks 55 against the top of the lower bushing and bears this lower bushing down against the gland 64, thereby supporting the weight of the shaft, the impeller 5 and the cup 5 on the lower bushing; the upper resting against the collar 54.

As shown in Figures 2, 5, and 8, the ejector nozzles 9 are so formed that they are more or less elliptical in cross-section and are open along the top as shown in Figure 5 at 66. This opening is in the shape of a slot formed by making overlapping edges, the upper of which extends in a direction opposite that of rotation. Hence as the oil flows upward through these nozzles in a thin film concentrated mostly on the trailing side of the nozzle, the air is drawn out of each nozzle by aspiration through the slot 56. In this way the mixing of the air with oil before the oil issues from the nozzles is prevented and intermingling of the finely divided oil particles and air does not take place until the air particles are discharged into a zone surrounding the impeller 5 and some distance therefrom. Hence combustion cannot take place at the ends of nozzles 9 but begins only after the oil has been projected out of the nozzles toward the periphery of the hearth surrounding the casing I. This feature is very important because the flames of the burning oil must not begin at the circumference of the casing I and the impeller 5, but must be confined to a predetermined zone separate from the impeller.

The impeller 5 is in the form of a fiat plate which has cylindrical peripheral portions 61 between the vanes and the nozzles 9, and the lower edges of these portions may be turned outwards as indicated at 68. The gate 12 may have recesses 69 adjacent to legs 2 and the inner edges of these recesses may be turned downward to form flanges 10. This construction enables the outside diameter of the gate to be large enough to close the bottom of the casing and still clear the legs so as to permit rotary movement of this gate.

The legs 2 are tubular attached to bearings H at the under side of the flange 3 and are threaded inside to receive threaded rods 12 projecting through the bottoms of these legs and bearing at their lower ends feet 13 with cushions 14 in their lower faces. By turning the feet 13 the rods 12 are adjusted and the length of the legs is altered. Thus the device can always be properly supported even though the surface beneath it be somewhat uneven.

As shown in Figures 2, and S, the ends of bar 33 making the nozzles 9 are perforated to form inlets for oil to enter these nozzles from the cup 6.

Having described my invention, what I believe to be new and desire to secure and protect by Letters Patent in the United States, is:

1. An oil sprayer comprising a casing, a spray cup within said casing, the bottom of said casing being open and the top being apertured, and a gate surrounding the cup and mounted adjacent the open end of the casing, and means for moving the gate upwardly and downwardly to control the amount ofair entering the casing.

2. An oil sprayer comprising a casing, a spray cup within the casing, the bottom of said casing being open, and a gate adjacent said open end and surrounding the cup and mounted to be revolved and moved upwardly and downwardly toward and from said casing to regulate the air flowing through said end into the casing.

3. An oil sprayer comprising a rotatable cup for receiving oil, means for feeding oil to said cup, an impeller for air and connections between the cup and the impeller of unequal length adapted for selectively securing the cup to the impeller in different positions of separation, whereby to vary the distance to which oil is thrown from the cup.

4. In an oil sprayer, a rotating ejector nozzle for throwing off oil centrifugally slotted longitudinally on the trailing side thereof for the exit of air therefrom, and means for rotating the nozzle bodily around a circular path.

5. In an oil sprayer, an ejector nozzle for throwing off oil centrifugally mounted to be revolved about a path non-coincident with its own axis, said nozzle having a longitudinal slot on the trailing side thereof for the discharge of air therefrom, said slot being disposed at a point remote from the portion of the interior surface of the nozzle over which the oil flows during the revolution-of the nozzle, and means for revolving said nozzle.

6. In an oil sprayer, a discharge nozzle mounted for revolution bodily about an axis, and means for revolving the same, said nozzle having overlapping edges forming a slot along the top of said nozzle, the inner of said edges extending in the direction of revolution and the outer in the opposite direction.

7. In an oil sprayer, a spray cup, a cross-bar secured to said cup and means engaging the cross-bar to revolve the cup, one end of said cross-bar having its edges curled over to form an ejector nozzle communicating with the interior of the cup.

8. An oil sprayer comprising a casing, a spray cup therein, means to revolve said cup, an airgate to control the passage of air around the cupthrough the casing, said casing having one or more downwardly extending inclined rails, bearing elements on the gate resting upon said rails, and an adjusting screw connected to one of said elements to revolve the gate when the screw is turned, and raise or lower the gate.

9. An oil sprayer comprising an impeller having a flat top, depending portions with open spaces between them, a spray cup having discharge nozzles in line with said open spaces, means to revolve said cup and impeller, and impeller vanes attached to the top adjacent the nozzles and on the leading side thereof.

10. An oil sprayer comprising a rotary impeller, a spray cup, means for rotating said cup and impeller, cross-bars secured to the cup, nozzles at the ends of the cross-bars, one of said cross-bars being displaced from the transverse plane of the other and connecting means of varying length secured to the impeller to cooperate with said cross-bars for adjusting the distance between the cup and the impeller.

11. An oil sprayer comprising a spray cup and. an impeller, means for rotating said cup and impeller, a central spider-shaped frame having legs extending away from the impeller and bent on themselves and returned to the impeller and affixed thereto at their ends, said legs being of unequal lengths, and cross-bars on the cup for connection to said legs to vary the distance between the cup and the impeller.

12. An oil sprayer comprising an impeller and a spray cup, means for rotating said cup and impeller, cross-bars rigid with the cup and lying in different transverse planes, a spider-shaped frame having portions bent away from the impeller and then returned thereto and made rigid with the impeller at their ends to form connecting legs, said legs being of unequal lengths and arranged to be attached to the cross-bars so as to vary the relative positions of the cup and impeller.

13. A spray cup having one end open with an annular channel inside said end, a fixed nozzle in the cup to supply oil to the channel, a shaft on which the cup is mounted, a cross-bar in the cup having an opening to receive said shaft, said opening having an extension to permit the cup to be shifted sideways to enable the cup to clear said nozzle.

14. An oil sprayer comprising a cup having an annular reservoir inside one end, a cross-bar having an opening with an internal key projection, a shaft having grooves to receive said projection, the shaft having a reduced prolongation at one end, the opening having a lateral extension to enable the cup to be shifted laterally with reference to said shaft, and a fixed nozzle in the cup to supply oil to the reservoir, the cup when shifted with reference to the shaft enabling the reservoir to clear said nozzle.

15. An oil sprayer comprising a spray cup with ejector nozzles and a main drive shaft, having a shoulder with one or more keyways adjacent said shoulder, a cross-bar in the cup containing an opening with projections to engage the keyways, and a reduced tapering terminal prolongation on the shaft at said shoulder, and a second cross-bar having an opening in which said tapering prolongation fits.

16. In an oil sprayer, a rotary ejector nozzle for throwing off oil centrifugally, said nozzle on its trailing side having an opening for venting air therefrom and means for rotating the nozzle bodily around a circular path.

17. In an oil sprayer, a rotary ejector nozzle for throwing off oil centrifugally, said nozzle on its trailing side having an opening for venting air therefrom, rotary means above the trailing side of the nozzle for causing the aspiration of air therefrom, and means for rotating the rotating means and the nozzle bodily around a circular path.

18. A device for spraying oil which comp-rises a cup open at its bottom and top for holding a body of oil, means for revolving said cup to subject the oil therein to centrifugal force, means for discharging said oil from near the rim of the cup in the form of one or more streams, means for aspirating the air from said discharging means rearwardly of the point of discharge, and means for breaking up said oil into fine particles upon discharge and diffusing the same for final admixture with air to facilitate combustion.

OSCAR J. APPEL. 

